Lab 16 The Digestive System BIO202L
Student Name: Bridget Mijares
Access Code (located on the lid of your lab kit): AC-Q0Y2RO8
Pre-Lab Questions:
”1. Explain the digestion that occurs in the oral cavity.”
Mechanical digestion starts in the oral cavity (mouth) with food being chewed. Then, chemical digestion
begins with the enzyme amylase in saliva breaking down carbohydrates.
”2. What is the function of the liver in digestion? ”
To process nutrients absorbed in the small intestine. Bile from the liver secreted into the small intestine
also plays a role in digesting fat and some vitamins.
”3. What role does the gallbladder play in digestion? ”
The gallbladder holds bile until the liver needs it.
”4. Why is the orientation of the muscle of the stomach wall important? How does this contribute to its
function? ”
It needs to churn the food in order to break it down properly. It keeps the chyme moving from all
directions
Experiment 1: Microscopic Anatomy of the Digestive System
Post-Lab Questions
”1. Label the items in the following slide pictures. ”
A- Lamina propria
B- Epithelia
C- Submucosa
D- Mucosal glands
E- Submucosa
, Lab 16 The Digestive System BIO202L
Student Name: Bridget Mijares
Access Code (located on the lid of your lab kit): AC-Q0Y2RO8
Pre-Lab Questions:
”1. Explain the digestion that occurs in the oral cavity.”
Mechanical digestion starts in the oral cavity (mouth) with food being chewed. Then, chemical digestion
begins with the enzyme amylase in saliva breaking down carbohydrates.
”2. What is the function of the liver in digestion? ”
To process nutrients absorbed in the small intestine. Bile from the liver secreted into the small intestine
also plays a role in digesting fat and some vitamins.
”3. What role does the gallbladder play in digestion? ”
The gallbladder holds bile until the liver needs it.
”4. Why is the orientation of the muscle of the stomach wall important? How does this contribute to its
function? ”
It needs to churn the food in order to break it down properly. It keeps the chyme moving from all
directions
Experiment 1: Microscopic Anatomy of the Digestive System
Post-Lab Questions
”1. Label the items in the following slide pictures. ”
A- Lamina propria
B- Epithelia
C- Submucosa
D- Mucosal glands
E- Submucosa
, Lab 16 The Digestive System BIO202L
